Fluid dispensing device



April 1945 A. L. PARKER FLUID DISPENSING DEVICE Filed Feb. 10, 1944 a SheetsSheet 1 Aprii 3@, 1946. PARKER 2,399,245

FLUID DISPENS ING DEVICE Filed Feb, 10, 1944 3 Sheets-Sheet 2 April 30, 1946.

A. PARKER FLUID DISPENSING DEVICE 3 Sheets-Sheet 3 Filed Feb. 10 1944 Patented Apr. 30, 1946 FLUID DISPENSING DEVICE Arthur L. Parker, Cleveland, Ohio, assignor to The Parker Appliance Company, Cleveland,

Ohio, a corporation of Ohio Application February 10, 1944, Serial nafsznsci 11 Claims.

This invention relates to fluid dispensing devices and more particularly to dispensing devices for controlling the delivery of fluid from a pressure source, for example a pump, to one or more selected points for use. Devices embodying the invention are particularly adapted for operation as primers for internal combustion engines.

United States patents to Arthur L. Parker Numbers 1,934,878 and 1,942,255 granted November 14, 1933, and January 2, 1934, respectively, disclose prior dispensing devices of the class to which the present invention relates. In these patented constructions a pump piston is provided with means whereby at the end of its compression stroke the piston may be connected'to a distributing valve arranged to turn about the axis of the piston so as to direct the pump discharge to selected points for use. In accordance with one feature of the present invention, a distributor valve mechanism may be arranged alongside a pump cylinder, and the setting of the valve or valves to permit r prevent now of fluid may be eifected by operation of a handle or the like preferably arranged to operate near the pump piston. The construction disclosed herein has some features which, in a very broad sense, are similar to features of construction disclosed and claimed in the co-pending application of Arthur L. Parker, Robert H. Davies, and Joseph F. Melichar, Ser. No. 467,196, filedNovember 22, 1942.

An object of the present invention is toprovide a fluid dispensing device, e. g. an engine primer, embodying new and improved features of construction making it certain and eflicient in operation and suiting it for exacting duties, for example the priming of aircraft engines to insure quick starting. I

Another object of the invention is to provide a device of the character referred to including an improved means for locking the pump against operation.

Another object of the invention is to provide a device of the character described including a pump cylinder and distributor valve body detachably assembled in a novel way, the valve body being adapted to be fitted to or removed from the pump cylinder by relative movement of the valve body longitudinally or axially with respect to the cylinder.

Another object of the invention is to provide a device of the character referred to in which a distributor valve element, for example a rotor, is so mounted in the valve body and so connected to a valve operating handle as to facilitate re- .,device of the character described in which the movable distributor valve element is readily accessible and easily removable for repairs or adjustments.

Another object of the invention is to provide .a novel and improved distributor valve construction.

A further object of the invention is to provide a distributor valve including a rotor equipped with outwardly pressed, circumferentially spaced .sealing members adapted to controlthe flow of 'fiuid selectively through a pluralityof discharge ports. I

Other objects will become. apparent from a reading of the, following detailed description, the

.Happended claims, and the accompanying drawings.

In the drawings: Figure 1 is an axial longitudinal sectional view of a device embodying the invention, the section, being taken on the line. ll of Figure2.

Figure 2 is a top plan view. Figure 3 is a bottom plan view.

Figure 4 is a fragmentary elevation looking in the direction of the arrow 4 in Figure 3.

Figure 5 is a section on the irregular line 5-5 of Figure 3. v

Figure 6 is a cross section on the line (5-46 of Figure 5.

Figure '7 is a cross section on the line ll of I Figure 5. 35'

Figures 8, 9, and- 10 are detail cross sectional views on the line 8-8 of Figure 5 and respectively showing a valve rotor in different positions.

A preferred embodimentof the invention hown in the accompanying drawings comprises a fluid dispensing device adapted to direct fluid under pressure selectively to two points for use or to cut oii the supply of fluid entirely. The device includes a pump generally designated A and a distributor device generally signated B detachably mounted on the pump. The pump is adapted to be'operated manually by a handle I and the distributor device is controlled by a handle 2 pcsitioned close to the pump handle I so that the pump and distributor may easily be operated co-relatively.

The pump A includes a barrel or cylinder 3 open at its inner. and outer ends 4 and 5 respectively. A flange 6 integral with th cylinder 3 adjacent itsouter end 5' is provided with opening l for mounting the dispensing device on an instrument panel or like support. The outer end of the cylinder is counterbored as at 8 to form a resultant shoulder S. A bushing in the counterbore 8 abuts the shoulder 9 and has a flat edge engaged by a packing l I held in place by a bushing l2. The bushing I2 is flanged at 3 to be drawn up by a flange M on a nut l5 which has threaded engagement with the cylinder barrel 3. The nut l 5" is formed-i witl'r. serrationsi. I 6 engage-- abl with a spring finger-detent 1T for holding the nut against accidental turning.

and parallel to the axis of the pump cylinder The pump also includes a movable plunger element l8 which extends outwardly beyond. the.- a

cylinder end 5 for receiving the handle I' hel'din place by a screw I9. The inner endzofithaplun'ge-re is reduced as at to provideia shouldei 21E A washer 22 surrounding the reduced plunger por tion 20 abuts against the shoulder 2| andais of slightly greater diameter than the plunger proper but is of considerably less diameter than thewallof the cylinder 3. A hearing. member. 23. which preferably is of non-metallic; material; suchas laminated linen base. phenolic. resin, .is mounted on the plunger reduced portion wandiiscl'amped between the washer. 22"and..another. washer. .24, drawn toward the: inner. end or. the plunger by a screw 25. The washer 24 is of about the same.-

diameter as the washer 22 but. the. bearing-main ber 23 i of considerably larger. diameter. seas. to

be engageable with the wall of the cylinder 3 61 guiding the inner endof. the. plunger... However, the bearing member.23iiis..rathe1:..looselyfitted.

W t int e Cylinder. there being .sulficientworking.

clearance; to prevent trappingof liqui'der air. in

the annular chamber.- surrounding the-plunger...

The distributor device Bincludes a casingbr.

valve body. 26. formed .witha fiangeZTLada-pted-to be.fitted over. the inner. end. ofthe cylinder by relative axialmovementof'the body. 26 Withdespect to the cylinder 3; A washer 28 is interposed between the inner end face of the. cylinder and the valve body 26. so .as. to seal.the.joint between the cylinder and. valve. body when...the latter is drawn toward the cylinder. by threescrews 25.

The valve body 26 i ,.formed.withl-.a-chamber 30 adapted to receive 'fiuidithroughlanintake port 3lconnected. to. any. suitablesource ofi supply (not shown)... valve 32 1 urged-v on. it seat by a. spring; 33- interposed between a spring follower 34 andaspringi.

abutment. member. or. plate. 35- clamped. between The port. 31. is. controlled:by ail-ballthe cylinder barrel 3 and valve body 26-. 1 The abutment. plate-35 is formedwith a boss .3fi -having a passage aperture 36 leading from the- .05 1 inderto. the valve chamberBlL: The plate-35 fits in. a. depression. 31 inthe va-lve:-body 26: and the Y boss 36. extends into a valve. body counterbere-38;-

Ext'endingl'aterallv from the chamber. 30. is an outlet port39i controlledby a plstonvalve element- 40 equipped witha rubber facingwasher 4 I. The: valve element 40 -is;reciprocable in a valve cham- 1 her 42 and is urged. against its. seat by a spring.

43 interposedbetween asspring seat plug .44- andthe valve-element. As shown. in.-Fi'gure.5.-,the-.

valve element 40 i generally square in crosssec tion but. has rounded corners. or edgesinsliding engagement. with the-walls. of the chamber. 42-; Thus, when the. element 40? is lifted. from its seat fluid can pass out through the. port. 39 and thence. through the spaces between the flat sides of they valve element and the walls. of the chamber 42 In'operation, when the pump piston I8 i moved outwardly the intake valve ball1'32 will'be moved ofi its seat by suction in: the cylinder and fluid will be drawn into the'cylinder through the inand is open at both of its ends 66 and 67. A cross passage. 48 extends from the chamber 42 to the interior of the bore 45. The adjacent end of thaborgfifi is closed. by a cap 49.

at its inner end with a passage 54 extending laterally to theoutside' ofthe valveelement 52. The closure cap 49"acts..as anabutment for holding. the rotor 52' against axial movement. toward the adjacent end. of the bodyizfi' and is .formed with an axial'bore 55 and'with" radial openingsBB. which enable fluid discharged throughzthe cross passage 48"to flowinto the longitudinal passage 53' in the rotor;.

'Theiposition of'the rotor 52 in the bore 45 determines whether. fluid discharged by the pump is to be delivered" through thedischarge port 55,,01' the discharge port 5|, or is prevented from being delivered through either discharge port. For obtaining such a selective control the rotor 52' is provided with three cup shaped pressure mem-v bets 5?, 58; 59; preferably formedof graphitio material and each being restrained from longia tudinallandrotary movement with respect. to the rotor. The pressure members have curved outer.

faces conforming. to thewall of the bore 45 and are urged outwardly into sealing engagement with the, .bore wallby' springs, 6 l-.

as being spaced circumferentially at intervals of ninetydegrees. By referring to Figures 8, 9 and 10. it. can readily be seen that. the rotor 52, when.

surememhers 58' and .59. so that. no fluid can be deliveredfat. alll. With the rotor 52 positioned as shown in Figure 9, the lateral passage as registers with thedischarge port 5| so that fluid can be delivered throughithe latter. At this timev the otherdischarge port 50 is covered by the pressure member 59.. When the rotor is positioned as shown in Figure 10 fluid can be delivered throughthe lateral passage 54' and the discharge port 50, the port 5 l beingsealed off by-the-pressure member 51 which covers it.

Means readily, accessible to the operator are provided for movingthe valverotor 52. to. its,

several'positions Acoupling member. 62. formed with a .shank 63. has a ring portion. 64 rotatable. inthe bore. 45, the ring portion preferably being In the. illustrated embodimentlthiee pressure members are shown provided with packing 65 in sealing engagement with the bore wall. A tongue 66 on the shank 63 extends into a groove 51 in the valve rotor for providing detachable end-to-end connection between the coupling member 62 and the rotor 52. An indexing ring 68 pinned to the shank 63 as at69 is formed with three depressions or recesses.

10 adapted selectively to receive a detent ball 1| urged inwardly by a spring'l2 interposed between an abutment plug I3 and a spring follower M engaging the ball 1|. The recesses ll] are so located with respect to the lateral passage 54 in the valve rotor and the pressure members 51, 58 and 59 that the ball 1| will be received in one of the recesses 10 when the valve rotor is in each of the positions shown in Figures 8, 9 and 10. Thus the spring pressed ball II and indexing ring 58 releasably hold the valve rotor against angular displacement from any of its selected set positions.

A split collar 15 mounted on the shank 63 of the coupling member 62 abuts against a washer 16 which in turn abuts the adjacent end face of the valve body 26. The collar 15 is drawn tight on the shank 63 by a clamping screw ll. The collar has a sleeve extension 18 pinned as at 19 to the shank 63 and riveted as at 80 to a valve operating stem 8| which extends through a bearing 82 in the pump barrel flange G. The valve handle 2, which preferably is of molded plastic, is mounted on the outer end of the stem 8| on the side of the flange 6 opposite the distributor device B. .The flange 6 provides a bearing for supporting the stem 8| against lateral movement while permitting free turning of the stem to effect adjustments of the valve rotor 52.

counterclockwise rotation. of the stem 8| and valve rotor 52 is limited by engagement of the end of the clamping screw 1'! with a stop lug 83 on the pump barrel 3. A wing 84 on the pump barrel overlaps the collar I so as to prevent the collar and operating members 62 from being withdrawn inadvertently from coupled engagement with the valve rotor 52.

If it is desired to service the distributor device the clamping screw 11 is loosened and the pin 19 is removed to uncouple the operating member 62 from the collar 15 and stem 8|. The screws 29 are then taken out and the valve body 26 is moved endwise away from the cylinder 3. Because of the pressure exerted by the detent ball the coupling member 52 will remain in the valve body 26 but can easily be Withdrawn therefrom merely by overcoming the yielding holding pressure of the ball II. By removing the closure cap 59 the valve rotor 52 will be made easily accessible. Thus, the distributor device can be detached for adjustment or repair without disturbing the mounting of the pump and the valve operating stem 8| on the instrument panel or other support.

Figure 2 indicates the three positions to which the valve operating handle 2 may be moved to set the valve rotor 52 either to cut off delivery entirely, or to deliver fluid through the port 50, or to deliver fluid through the port 5|. When the handle 2 is in the full line position designated I, the valve rotor 52 will be set as shown in'Figure 8 so that there can be no'delivery of fluid through either discharge port 50 or 5|, The handle position indicated at II corresponds to the position of the rotor 52 shown in Figure 9 wherein pumped fluid will be delivered through the discharge port 5|, and the handle position designated III corresponds to the position of the valve rotor shown inFigure in which the parts are co related to enable fluid to be delivered through the port 50;

' The pump handle I is formed with a skirt I adapted to extend over the outer end 5 of the cylinder and the gland nut l5 when the plunger I8 is in its innermost position. In order that the pump plunger will be locked against operation when the distributor valve rotor 52 is in the cutoff position shown in Figure 8, the laterally projecting valve adjusting handle 2 is arranged to extend over or to overlap a flange 86 on the skirt 85 as shown in Figure l. Withdrawal of the pump plunger I8 is prevented by engagement of the skirt flange 86 and valve adjusting handle 2.

The dispensing device disclosed herein embodies the invention in a preferred form but it will be understood that changes may be made without departing from the invention as defined in the claims.

I claim:

1. Ina fluid dispensing device, a pump cylinder open at one of its ends; plunger means extending through the opposite end of said cylinder; a valve body mounted against said open end of said cylinder and having a chamber communicating with said cylinder open end; a flange on said valve body circumferentially engaging said cylinder at the open end thereof and being adapted to be fitted to and detached from said cylinder by relative movement of said valve body axially of said cylinder; means for detachably fastening said valve body to said cylinder; valve mechanism carried by said valve body; and an apertured abutment member clamped between said open end of said cylinder and said valve body for retaining said valve mechanism in operative position in said valve body.

2. In a fluid dispensing device, a pump cylinder open at one of its ends; plunger means extending through the opposite end of said cylinder; a valve body mounted against said open end of said cylinder and having a chamber communicating with said cylinder open end, said valve body being removable from said cylinder by relative movement axially with respect to the cylinder; means for detachably fastening said valve body to said cylinder; a distributor valve element movable in said valve body; an operating stem extending'substantially parallel to and alongside said cylinder; and means detachably connecting said operating stem to said valve element, the arrangement being such that when said fastening means and said connecting means are re leased said valve body and valve element can be moved endwise away from said cylinder and said operating stem.

3. In a fluid dispensing device, a pump cylinder open at one of its ends; plunger means extending through the opposite end of said cylinder; a valve body mounted against said open end of said cylinder and having a chamber communicating with said cylinder open end, said valve body being removable from said cylinder by relative movement axially with respect to the cylinder; means for detachably fastening said valve body'to said cylinder; a distributor valve element movable in said valve body; an operating stem extending substantially parallel to and alongside said cylinder; bearing means fixed with respect to said cylinder and mounting said operating stem for valve adjusting movements; and means detachably connecting said operating stem to said valve element, the arrangement being such that when said fastening means and said connectcylinder and 'saidoperating stem :while; said operating. stem. is still; mounted by said bearing.

means.

4. In a fluid dispensing device,,.a pump cylinder open at oneof its ends; plunger means extending through the opposite end. of. said: cylinder; avalve body mounted against saidopenendofisaid cylinder and. having. a chamber communicating with. said cylinder-openend, said valve body being. re

movable from saidcylinder; by relative movement axially with; respect to thecylinder; means for detachably fastening .said valve body; to, said cylinder; a distributor valve element rotatable in said: valve body; an operating stem. extending substantially.- parallel. to and alongside. said Lcylinder; a flange on said. cylinder formed witha bearing for mounting said operating stem to turn; and means detachably connecting said operating stem to said valve elementgthe arrangement being such that when said-fastening means and" said connecting: means arev released :saidvalve body and valveelementcan be moved'endwise. away from said. cylinder and said:operatinggstem while saidoperating: stem; is still mounted in said bearing.

5.- In afiuid dispensing device, a pump cylinder. open atone of. itsends; plunger means. extending through the-opposite end'ofsaid cylinder; a. valve body mounted against-."said open: end. of said cylinder-and having" aechamber communicating with-saidcylinder open; end, saidvalve body being-removablefrom'said'cylinder by relative movementfaxiallyzwith respect: to thecylinder; means. for detachably fastening said valve body to said cylinder; a loorein said valve body communicating with. said chamber; a discharge port opening. throughsaid body'zlaterally into :said bore;. a valve rotor rotatable in said bore in; the zone of said discharge port;. a longitudinal passage in .said rotor communicating. with said bore; a lateral. passage insaid rotor extending from said longitudinal passage, tothe outsideyof: said rotor andbeing. adapted; inone position of said rotr, to communicate with said port; a pressure." member interposed between said rotor and the wall. of. said bore; a spring interposed between said rotor and said. pressure: member for. urgingsaid pressuremember. into contact with; said-wall;

der and having. a chamber communicating with said. cylinder open. end, said valve body being removable from said cylinder by relative movement axially with respect to the cylinder; means for detachably fastening .said valve body to said cylinder; abore in said valve body communicating with said. chamber; a discharge port opening through said body laterally into said bore; a valve rotor rotatable. .in. said bore inthe zone of. said discharge port; a longitudinal passage in said rotor communicatingwith said=bore-;, alateral-passage inv saidrotor extending-from said longituing: meansare: released-said valvebody: and .valve element can be moved endwise awayfromzsaid:

dinal, passage,..to the outside. of; said. rotor; and being; adapted; in. one. position. of said-.rotorntos communicatewith said port; .a pressure member interposedzbetweenysaidrotor and the wallofsaid l bore; and; being adapted, in. a different. position of saidrotonto coversaid port; and antopening in said. rotor extending. between said longitudinall passage and the radially inner face of said pressure member whereby said pressure member will be forced .against the bore wall by fluid pressure; an operating stem extending substan-- tially parallel to and'alongside said cylinder; and means detachably: connecting said operatingste'm to said valve rotor, the-arrangement being such that when said fastening means and said connecting means are released said valve bodyandvalve rotor can be moved endwise away from'said cylinder and said operating stem.

7. Combination as set forth in claim 6 which includes, for holding the'valve rotor against axial movement inone direction, a plug mounted in one end of the valve boreand abutting an end of the valve rotor, said plug having an axial bore communicating'with the longitudinal passage in the rotor, and a radial opening providing communication between said axial bore and said chamber;

8'. In a fluid dispensing device, a pump cylinder open at one of its ends;, plunger means-extending through the opposite end of said cylinder; a valve body mounted against said open end of said-cylinder and having a chambercommunieating with said cylinder open end, said. valve body being removable from said cylinder by relative movement axially withrespect' to the cylinder; means for detachably fastening. said valve body to said cylinder; a distributor valve element movable in'said valve body; an operating stem extending substantially parallel to and alongside.- saidcylinder; a lug projecting laterally fromsaid cylinder and spaced axially from an end of'said valve body; a collar on said stem extending between said lug and said end of the valve body. for limiting endwise movementof said stem;. and means detachably connecting said operatingstem tofsaidvalve element, the arrangement beingsuchthat when. said fastening means and saidconnecting means'are, released said valve. body and valve element, can be. moved endwise away from said cylinder and. said operating. stem.

9. In a fiuiddispensing device, a pump cylinder open at one of its. ends; plunger. means extending.

through. theopposite end of. said cylinder; a valve body mounted againstsaid open endof said. cylinder and, having a chamber. communicatingwith said'cylinder open end,,said valve body being re.- movablefromsaid cylinder by relative movement axially with respect. to .the cylinder; means; fora distributor valve element rotatable insaidvalve bore; an operating stem extending substantiallyv, parallel toand alongsidesaid cylinder; and. means detachably connecting said. operatingstemto said.

valve element, the arrangement. being such that when-said fastening means and said connecting means are releasedv said valve body and valve element can. bemoved endwise away from said cylinder andsaid operating stem.

10. Ina fluid dispensingdevicaa pump include.

inga cylinder; and a plunger reciprocable; therein a valve-body onsaid cylinder; formed wi-th: a-bore extending parallel-to the cylinder axis-and spaced laterally from the cylinder; means providing valved communication between said cylinder and said bore; a discharge port opening laterally through said body into said bore; a rotor in said bore for controlling flow of fluid out through said port; a rotatable valve operating member extending into said bore at one end thereof; an end-toend detachable connection between said member and said rotor; a split collar on said member cooperable with said valve body for limiting movement of said member axially into said bore; a clamping screw for drawing said collar tight on said member; and a stop on the outside of said cylinder engageable by an end of said screw for limiting rotation of said member and said rotor in one direction.

11. In a fluid distributing device, a cylinder; a

plunger reciprocable therein; an operating handle on an end of said plunger extended beyond one end of said cylinder; a skirt on said handle adapted to move over said end of said cylinder when the plunger is in its innermost position in said cylinder; a peripheral flange on said skirt; a distributor valve including a bore extending alongside said cylinder and a valve rotor rotatable in said bore; a rotatable valve operating stem extending alongside said cylinder; and means projecting laterally from said stem and being adapted to overlie said flange when said plunger is in its innermost position and said valve rotor is in a predetermined position to thereby hold said plunger against operation.

ARTHUR L. PARKER. 

